GroundRules
40 CFR 425.25: Pretreatment standards for existing sources (PSES).
Where this section sits in the code
- Title 40—Protection of Environment
- CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
- SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS
- PART 425—LEATHER TANNING AND FINISHING POINT SOURCE CATEGORY
- Subpart B—Hair Save, Chrome Tan, Retan-Wet Finish Subcategory
Except as provided in § 425.04 and 40 CFR 403.7 and 403.13, any existing source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403, and achieve the following pretreatment standards:
Pollutant or pollutant property PSES
Maximum for any 1 day Maximum for monthly average
Milligrams per liter (mg/l)
Sulfide 24
Total Chromium 12 8
pH (1) (1)
1 Not less than 7.0.
Collected 2026-08-27T02:26:04Z. Source file · JSON